/* BASE */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--bg-primary);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--text-secondary);
  background:
    radial-gradient(circle at 20% 0%, rgba(37, 99, 235, 0.18), transparent 32rem),
    radial-gradient(circle at 85% 18%, rgba(96, 165, 250, 0.12), transparent 30rem),
    linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 48%, var(--bg-primary) 100%);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.8), transparent 72%);
}

body::after {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  opacity: 0.18;
  background-image:
    radial-gradient(circle at 25% 30%, rgba(255, 255, 255, 0.18) 0 1px, transparent 1px),
    radial-gradient(circle at 70% 60%, rgba(255, 255, 255, 0.14) 0 1px, transparent 1px);
  background-size: 180px 180px, 240px 240px;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  color: var(--text-primary);
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid rgba(96, 165, 250, 0.75);
  outline-offset: 4px;
}

::selection {
  color: var(--text-primary);
  background: rgba(37, 99, 235, 0.5);
}

.skip-link {
  position: fixed;
  top: var(--space-16);
  left: var(--space-16);
  z-index: 999;
  padding: var(--space-12) var(--space-16);
  color: var(--text-primary);
  background: var(--brand-primary);
  border-radius: var(--radius-full);
  transform: translateY(-160%);
  transition: transform var(--transition-normal);
}

.skip-link:focus {
  transform: translateY(0);
}

/* LAYOUT */
.section-container {
  width: min(100% - 64px, var(--container-lg));
  margin-inline: auto;
}

section {
  position: relative;
  padding-block: var(--space-120);
}

.section-heading {
  max-width: var(--text-width);
  margin-bottom: var(--space-64);
}

.section-heading h2,
.section-copy h2 {
  margin: var(--space-12) 0 var(--space-24);
  font-size: var(--text-section-title);
  line-height: var(--leading-heading);
  color: var(--text-primary);
}

.section-heading p,
.section-copy p {
  margin: 0;
  max-width: var(--text-width);
}

.section-label {
  margin: 0;
  color: var(--brand-light);
  font-size: var(--text-caption);
  font-weight: var(--weight-semibold);
  line-height: 1.4;
  text-transform: uppercase;
}

.split-layout,
.contact-layout,
.hero-layout {
  display: grid;
  align-items: center;
  gap: var(--space-64);
}

.split-layout,
.contact-layout {
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
}

/* HEADER */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: var(--header-height);
  border-bottom: 1px solid transparent;
  background: rgba(5, 8, 22, 0.74);
  backdrop-filter: blur(var(--blur-glass));
}

.site-nav {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-32);
  width: min(100% - 64px, var(--container-xl));
  min-height: var(--header-height);
  margin-inline: auto;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  min-width: 168px;
}

.brand-logo {
  width: 184px;
  height: auto;
}

.nav-menu {
  display: flex;
  justify-content: center;
  gap: var(--space-32);
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--text-muted);
  font-size: var(--text-small);
  font-weight: var(--weight-medium);
}

.nav-menu a {
  transition: color var(--transition-fast);
}

.nav-menu a:hover {
  color: var(--text-primary);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding-inline: var(--space-24);
  color: var(--text-primary);
  font-size: var(--text-small);
  font-weight: var(--weight-semibold);
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-button);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.nav-cta:hover {
  color: var(--text-primary);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.26);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background: var(--bg-surface);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-full);
}

.nav-toggle-line {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--text-primary);
  border-radius: var(--radius-full);
}

/* BUTTONS AND LINKS */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--button-height);
  padding-inline: var(--space-32);
  font-size: var(--text-small);
  font-weight: var(--weight-semibold);
  line-height: 1;
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  transition:
    color var(--transition-normal),
    background var(--transition-normal),
    border-color var(--transition-normal),
    transform var(--transition-normal),
    box-shadow var(--transition-normal);
}

.button-primary {
  color: var(--text-primary);
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  box-shadow: var(--shadow-button);
}

.button-primary:hover {
  color: var(--text-primary);
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(37, 99, 235, 0.28);
}

.button-secondary {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--border-secondary);
  backdrop-filter: blur(var(--blur-glass));
}

.button-secondary:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.07);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.text-link {
  display: inline-flex;
  margin-top: var(--space-32);
  color: var(--brand-light);
  font-size: var(--text-small);
  font-weight: var(--weight-semibold);
  text-decoration: underline;
  text-underline-offset: 6px;
}

/* HERO */
.hero-section {
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  padding-block: var(--space-80) var(--space-120);
}

.hero-layout {
  grid-template-columns: minmax(0, 0.95fr) minmax(420px, 1.05fr);
}

.hero-content h1 {
  max-width: 820px;
  margin: var(--space-16) 0 var(--space-24);
  color: var(--text-primary);
  font-size: var(--text-hero);
  line-height: var(--leading-hero);
}

.hero-description {
  max-width: 650px;
  margin: 0;
  font-size: 1.25rem;
  color: var(--text-secondary);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-16);
  margin-top: var(--space-32);
}

.hero-trust {
  margin: var(--space-24) 0 0;
  color: var(--text-muted);
  font-size: var(--text-small);
}

.hero-visual {
  position: relative;
  margin: 0;
  min-height: 560px;
  padding: var(--space-32);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.025)),
    rgba(255, 255, 255, 0.03);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  backdrop-filter: blur(var(--blur-glass));
}

.hero-visual::before {
  position: absolute;
  inset: 12%;
  content: "";
  background:
    radial-gradient(circle, rgba(37, 99, 235, 0.28), transparent 62%),
    radial-gradient(circle at 70% 30%, rgba(96, 165, 250, 0.18), transparent 42%);
  filter: blur(34px);
  opacity: 0.75;
}

.knowledge-network {
  position: relative;
  z-index: 1;
  min-height: 460px;
}

.knowledge-network::before,
.knowledge-network::after {
  position: absolute;
  inset: 19% 14%;
  content: "";
  border: 1px solid rgba(96, 165, 250, 0.18);
  border-radius: 46%;
}

.knowledge-network::after {
  inset: 31% 19%;
  border-color: rgba(255, 255, 255, 0.12);
  transform: rotate(-12deg);
}

.network-center,
.network-node {
  position: absolute;
  display: grid;
  place-items: center;
  border: 1px solid var(--border-primary);
  background: rgba(5, 8, 22, 0.68);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(var(--blur-glass));
}

.network-center {
  top: 50%;
  left: 50%;
  width: 150px;
  height: 150px;
  color: var(--text-primary);
  font-size: 1.75rem;
  font-weight: var(--weight-bold);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.network-node {
  width: 132px;
  min-height: 72px;
  color: var(--text-secondary);
  font-size: var(--text-small);
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-lg);
}

.node-document {
  top: 8%;
  left: 12%;
}

.node-ticket {
  top: 16%;
  right: 8%;
}

.node-policy {
  bottom: 13%;
  left: 8%;
}

.node-system {
  right: 13%;
  bottom: 7%;
}

.visual-caption {
  position: relative;
  z-index: 1;
  color: var(--text-muted);
  font-size: var(--text-small);
  text-align: center;
}

/* CARDS */
.insight-grid,
.card-grid,
.comparison-grid {
  display: grid;
  gap: var(--space-24);
}

.insight-grid,
.card-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.comparison-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.insight-card,
.feature-card,
.process-card,
.comparison-card,
.technology-list article,
.faq-item,
.contact-form,
.chat-demo {
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.025)),
    var(--bg-surface);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(var(--blur-glass));
}

.insight-card,
.feature-card,
.process-card,
.comparison-card,
.technology-list article {
  padding: var(--space-32);
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal), background var(--transition-normal);
}

.insight-card:hover,
.feature-card:hover,
.process-card:hover,
.comparison-card:hover,
.technology-list article:hover {
  border-color: var(--border-hover);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.035)),
    var(--bg-surface);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.insight-card h3,
.feature-card h3,
.process-card h3,
.comparison-card h3,
.technology-list h3 {
  margin: 0 0 var(--space-12);
  color: var(--text-primary);
  font-size: var(--text-card-title);
  line-height: var(--leading-heading);
}

.insight-card p,
.feature-card p,
.process-card p,
.technology-list p {
  margin: 0;
}

/* NARA CHAT DEMO */
.chat-demo {
  padding: var(--space-24);
}

.chat-demo-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-16);
  padding-bottom: var(--space-24);
  border-bottom: 1px solid var(--border-primary);
}

.chat-demo-header p,
.chat-demo-header span {
  margin: 0;
}

.chat-demo-header p {
  color: var(--text-primary);
  font-weight: var(--weight-semibold);
}

.chat-demo-header span {
  color: var(--text-muted);
  font-size: var(--text-caption);
}

.chat-message {
  width: min(100%, 520px);
  margin-top: var(--space-24);
  padding: var(--space-24);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
}

.chat-message p {
  margin: 0;
}

.chat-message-user {
  margin-left: auto;
  color: var(--text-primary);
  background: rgba(37, 99, 235, 0.16);
}

.chat-message-assistant {
  background: rgba(255, 255, 255, 0.045);
}

.chat-message footer {
  margin-top: var(--space-16);
  color: var(--brand-light);
  font-size: var(--text-caption);
}

/* PROCESS */
.process-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-24);
  margin: 0;
  padding: 0;
  list-style: none;
}

.process-card {
  min-height: 100%;
}

.step-number {
  display: inline-flex;
  margin-bottom: var(--space-24);
  color: var(--brand-light);
  font-size: var(--text-caption);
  font-weight: var(--weight-bold);
}

/* COMPARISON */
.comparison-card ul {
  display: grid;
  gap: var(--space-16);
  margin: var(--space-24) 0 0;
  padding: 0;
  list-style: none;
}

.comparison-card li {
  position: relative;
  padding-left: var(--space-24);
}

.comparison-card li::before {
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 8px;
  height: 8px;
  content: "";
  background: var(--text-muted);
  border-radius: 50%;
}

.comparison-card-highlight {
  border-color: rgba(96, 165, 250, 0.26);
}

.comparison-card-highlight li::before {
  background: var(--brand-light);
}

/* TECHNOLOGY */
.technology-list {
  display: grid;
  gap: var(--space-24);
}

/* FAQ */
.faq-list {
  display: grid;
  gap: var(--space-16);
}

.faq-item {
  padding: var(--space-24);
}

.faq-item summary {
  color: var(--text-primary);
  font-weight: var(--weight-semibold);
  cursor: pointer;
}

.faq-item summary::marker {
  color: var(--brand-light);
}

.faq-item p {
  margin: var(--space-16) 0 0;
  max-width: var(--text-width);
}

/* CONTACT */
.next-steps {
  display: grid;
  gap: var(--space-12);
  margin: var(--space-32) 0 0;
  padding-left: 1.25rem;
  color: var(--text-secondary);
}

.contact-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-24);
  padding: var(--space-32);
}

.form-field {
  display: grid;
  gap: var(--space-8);
}

.form-field-full,
.form-submit,
.form-microcopy {
  grid-column: 1 / -1;
}

.form-field label {
  color: var(--text-primary);
  font-size: var(--text-small);
  font-weight: var(--weight-medium);
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  min-height: var(--input-height);
  padding: 0 var(--space-16);
  color: var(--text-primary);
  background: rgba(5, 8, 22, 0.54);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-normal), background var(--transition-normal);
}

.form-field textarea {
  min-height: 140px;
  padding-block: var(--space-16);
  resize: vertical;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--brand-light);
  background: rgba(5, 8, 22, 0.72);
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--text-muted);
}

.form-submit {
  width: fit-content;
  border: 0;
}

.form-microcopy {
  margin: 0;
  color: var(--text-muted);
  font-size: var(--text-caption);
}

/* FOOTER */
.site-footer {
  padding-block: var(--space-80);
  border-top: 1px solid var(--border-primary);
  background: rgba(5, 8, 22, 0.72);
}

.footer-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr);
  gap: var(--space-64);
}

.footer-brand p {
  max-width: 520px;
  margin: var(--space-24) 0 0;
  color: var(--text-muted);
  font-size: var(--text-small);
}

.footer-logo {
  width: 220px;
  height: auto;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-32);
}

.footer-nav h2 {
  margin: 0 0 var(--space-16);
  color: var(--text-primary);
  font-size: var(--text-small);
}

.footer-nav ul {
  display: grid;
  gap: var(--space-12);
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--text-muted);
  font-size: var(--text-small);
}

.footer-nav a {
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 5px;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

.footer-nav a:hover {
  color: var(--text-primary);
  text-decoration-color: var(--brand-light);
}

/* REVEAL STATE */
[data-reveal] {
  opacity: 1;
  transform: none;
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 600ms ease-out, transform 600ms ease-out;
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: no-preference) {
  .hero-visual::before {
    animation: aurora-shift 20s ease-in-out infinite alternate;
  }

  .network-node {
    animation: float-subtle 6s ease-in-out infinite alternate;
  }

  .node-ticket,
  .node-system {
    animation-delay: 900ms;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@keyframes aurora-shift {
  from {
    transform: translate3d(-16px, 0, 0);
  }

  to {
    transform: translate3d(16px, 10px, 0);
  }
}

@keyframes float-subtle {
  from {
    transform: translateY(0);
  }

  to {
    transform: translateY(-10px);
  }
}